Process for producing an explosive



Patented Mar. 18, 1930 FFHCE MARTIN HAHN, OF BORITZ, NEARRIESA-ON-THE-ELBE, GERMANY PROCESS FOR. PRODUCING AN EXPLOSIVE NoDrawing. Application filed March 20, 1929, Serial No. 348,665, and inGermany January 31, 1929.

thus obtained, further addition of a solution of lime in nitric acid andre-drying being subsequently effected in order to render the explosiveready for use.

The explosive may be prepared as follows:

Burnt lime or calcareous earth is dissolved in raw, odorless nitric acidso as to produce a clear, transparent fluid resembling petroleum jelly.This fluid is diluted with 15 parts of water according to the desiredexplosive power and is then'mixed with cellulose in the form of peatpower, sawdust or the like, until a consistent mass is obtained. Thismass is given any suitable form and dried. The substance thus obtainedis insensitive to shocks, pressure and friction, even when hand-warm,and can therefore be handled and transported with safety.

In order to render the substance ready for use, it is again mixed withfluid obtained as i above by dissolving lime in nitric acid and redried.The resulting susbtance will be highly explosive and can be ignitedelectrically or by means of a fuse. It can be employed for thegeneration of machine power, for rock blasting and other purposes.

I claim: A process for producing explosives consisting in dissolvinglime in nitric acid, diluting the solution with water, adding celluloseto the mixture until a consistent mass is obtained, drying said mass,adding further solution of liine in nitric acid to the dried mass,andre-dry'ing it for use after such addition. MARTIN HAHN.

